Cooler



FIG. 1 is a perspective view of a cooler according to our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a left side elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a bottom plan view thereof.

Broken lines and the area within the broken lines are for illustrative purposes only and form no part of the claimed design. 

CLAIM We claim the ornamental design for a cooler, as shown and described. 